@misc{indiciaef5492c4b36f0,
  title = {Retention of lead during oxidative ashing of selected naturally occurring carbonaceous substances},
  author = {Frank Cuttitta and Jesse J. Warr},
  year = {1957},
  doi = {10.3133/tei683},
  url = {https://pubs.usgs.gov/publication/tei683},
  note = {Source identifier: tei683}
}